×
Did you know that Comet exists in a US version as well?

This website is using cookie files for provision of services, personalization of advertising and for analysing of visit rate.
By using this site you agree to our use of cookies. More information

manufacturer of measuring instruments
English Česky USA Polski Sweden Africa Magyar Español China Français

Four channel GSM data logger with pulse and two-state inputs with built-in modem

GSM data logger is designed to record from four binary inputs or from two pulse and two binary inputs. In case of exceeded set limits, SMS and JSON messages can be sent via GPRS data connection.It is possible to set the regular sending of JSON messages to COMET Database, the sending interval is adjustable. Alarms are also indicated locally by LED, LCD and acoustically by built-in beeper.
The recording is performed in a non-volatile electronic memory. The data can be transferred to a PC via USB-C.

GSM datalogger inputs can be set up for four binary inputs or two binary inputs and two pulse counters.

The device includes Traceable calibration certificate with declared metrological traceability of etalons is based on requirements of EN ISO/IEC 17025 standard.

  • code
    U7844M
  • Warranty
    3 years

Technical data

Measured value

Two-state signal
Pulses

BINARY INPUT

Parameters of the voltage contact „L“ level input voltage:< 0,4 V(*);
„H“ level input voltage:> 2 V;
Minimum voltage applicable:0 V;
Maximum voltage applicable:+30 V DC
Parameters of the voltage-free contact Contact resistance in „switched-on“ state:< 10 kOhm;
Contact resistance in the „switched-off“ state:> 300 kOhm;
Contact voltage in the „switched-off“ state:ca 3 V;
Minimum state duration necessary for latching the state:1s

COUNTER INPUT

Counter parameters Range 24 bits (16 777 215), possibility of letting the counter overflow
Maximum pulse frequency configured for voltage input - max. 5kHz
configured for a voltage-free or open-collector transistor - max. 200Hz

GENERAL TECHNICAL DATA

Operating temperature -20 to +60 °C
Channels 4x binary input nebo 2x binary input a 2x counter
Memory 500,000 values in noncyclic logging mode; 350,000 values in cyclic record mode
Recording interval adjustable from 1 s to 24 h
Display and alarm refresh adjustable 1 s, 10 s, 1 min
Recording mode noncyclic - data logging stops after filling the memory
cyclic - after filling memory oldest data is overwritten by new
Real time clock year, leap year, month, day, hour, minute, second
Power battery SONY LiIon 5200mAh
Protection class IP20
Dimensions 61 x 93 x 53 mm, with antenna 120 x 93 x 53 mm
Weight (including batteries) approx. 270 g
Warranty 3 years